That never changes if there is no air drag or air friction of any kind.
它未曾变过,如果没有空气阻力,或任何摩擦力。
When the humidity in the air content of more than 100%, the sealing ring bacteria get enough water, and the oxygen in the air friction and luminescence, dry after the disappearance.
在空气中的湿度含量达100%以上时，密环菌得到充分的水分，和空气中的氧元素磨擦而发光，干燥后即消失。
Wind movements are also modified in cities because buildings increase the friction on air flowing around them.
风向在城市里也会改变，因为建筑物增加了它们周围流动的空气的摩擦力。
The flick of a finger is enough to make a balloon accelerate away. When moving, it has little momentum and even the friction of the air quickly slows it up.
一根手指的弹击足够使一个气球加速离去，当气球运动时，一点动力，甚至空气的摩擦力可以很快使它慢下来。
The falling object, after traveling a certain distance through the air reaches a final speed, or "terminal velocity," because the object's friction with the air slows the fall.
物体在下落一定距离后由于空气阻力都会达到一个终极速度。
There is always a little bit of friction with the track, for one thing, and also, of course, with air.
和轨道,总会有一些摩擦力，当然和空气也是。
Its is actually acted upon by two forces, air resistance and friction resistance with the ice.
这两种力量分别是，空气阻力和冰面摩擦力。
Now, when you look at this there is something quite remarkable and the remarkable thing x - throughout this whole trajectory-- if there is no air draft, - if there is no friction-- is not changing.
你们可以看到,有件事非常值得注意,可以注意到,方向的速度，is，that，the，velocity，in，the，x，direction,在整个轨迹当中-,如果没有空气阻力，也没有摩擦力-,是不会改变的。
It is too low to fly satellites in since the friction from the small amount of air would destroy their orbits.
这一层太低不适合卫星运行，因为空气的摩擦力会破坏卫星的轨道。
The falling object, after traveling a certain distance through the air reaches a final speed, or "terminal velocity, " because the object's friction with the air slows the fall.
物体在下落一定距离后由于空气阻力都会达到一个终极速度。
Diamond bearing with the air, oil and water, low coefficient of friction and high load rate characteristics, compared with some of the technical aspects of stainless steel bearings to be improved.
金刚石轴承具有在空气、油和水中摩擦系数低以及高负载率的特点，与不锈钢轴承相比一些技术方面有待提高。
Mechanics principle is the theoretic foundation of animated drawing design, especially, gravity, air resistance, ground friction force and inertia force, elasticity principle are used abroad.
力学原理是动画设计的理论基础，其中重力、空气阻力、地面摩擦力以及惯性力、弹力原理在动画设计中运用较多。
In the alpine skiing, the primary determinant influencing the skiing resistance includes the friction between snowboard and snow, the air resistance and the counterforce from pushing snow.
在进行高山滑雪运动时，雪板与雪地之间的摩擦力、空气阻力以及推雪阻力都是影响高山滑雪运动员滑行阻力的主要因素。
Aerostatic slideways can make the worktable hanging by the aid of the definite stressed air, which don't come in contact with the slideways surface so that there isn't nearly friction working.
气浮导轨是借助有一定压力的空气使工作台悬浮，并且不与导轨表面接触的一种导轨形式，工作时的摩擦力几乎为零。
No movement mechanism friction wear, the mechanical efficiency high, this is type compressor vortex than other air compressor greatly energy saving main reason.
无运动机构的磨擦磨损，机械效率高，这是涡旋式压缩机比其它空气压缩机大大节能的主要原因。
The structural parameters of kinematics has a supreme comparability between primary and secondary air cylinder, and the consistency and stability of torque and friction can be better.
具有主、副气缸运动学上最大相似性的结构参数，可使得主、副气缸的摩擦力和扭矩尽量一致及平稳性更好。
Aimed at aerostatic guideway, a two dimensional distribution of air pressure and effect factor on the friction force were analyzed under high speed working conditions.
以静压气浮导轨为研究对象，对导轨气浮块底部气体压力的二维分布规律及影响摩擦力的因素进行了理论分析。
Then, improving measures about instrument pipe, air-power coming out of earth, reducing friction were emphasized.
着重介绍了对切土头、气压出土、减摩等工艺的技术改进措施。
Swirl pump is compact, light weighted and no speed-adjusting device needed, no friction except bearer, low noise, no water and no oil in the output air.
旋涡气泵结构紧凑，体积小，重量轻，不需变速装置，除轴承外其它部位没有直接接触磨擦，噪音低，送出的气源无水无油。
The factors that influence the whole efficiency of ventilating system adopting adjustment to variable air mass flow and friction were investigated.
对采用变流量、变阻力调节式通风系统整体效率的影响因素进行了探讨。
The flow friction coefficient increases with the increase of the cooling air Reynolds number and decreases with the rotating Reynolds number.
阻力系数随旋转雷诺数的增大而减小，随冷气雷诺数的增大而增大。
Effects of the geometric structure and thermal conductivity of the louvered fins on heat transfer and air flow friction in the radiators are evaluated in virtue of the computation program.
运用所编程序分析了散热器结构参数与材质对散热器流动阻力与散热性能的影响。
The air side heat transfer and friction characteristics of wavy fin-and-tube heat exchangers with and without hydrophilic coating were studied under dehumidifying conditions experimentally.
对附带亲水层和没有附带亲水层的波纹翅片管换热器在析湿工况下的空气侧特性进行了实验研究，分析了亲水层对空气侧换热和压降特性的影响。
A variable displacement friction-reducing technique for the vane type automobile air-conditioning compressor was presented to reduce the friction loss of vane-type compressor.
提出一种能实现可变排量的滑片式汽车空调压缩机减摩技术。
Between each pocket there is a metal stick to make frame firm and strengthened, and avoid the breaking because of friction under the high air velocity.
每个滤袋间一金属条固定，增加强度，并防止滤袋于高风速时，因风切之摩擦力而破裂。
Between each pocket there is a metal stick to make frame firm and strengthened, and avoid the breaking because of friction under the high air velocity.
每个滤袋间一金属条固定，增加强度，并防止滤袋于高风速时，因风切之摩擦力而破裂。
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